The side holes can help the dent puller quickly dissipate heat.The heating of the machine has the function of overheating protection. When the temperature reaches a critical value, the welding machine will automatically stop working, and can continue to operate after cooling.
eBay
Awithz Portable Battery Spot Welder DIY Mini Welding Machine 18650 Battery Pack Nickel Strip and Nickel Belt Welding Tool
Aliexpress UK
The two solder pins can't touching, avoid short circuit. The machine power should be plugged into the wall socket. (40A is better) Welding Current Reference: 20A circuit breaker switch can use welding current 20 30A circuit breaker switch can use welding current 30 40A circuit breaker switch can use welding current 40 If you need to use a larger welding current, you can replace the larger circuit breaker switch as needed!
eBay
Awithz UK1 Portable Battery Spot Welder DIY Mini Welding Machine 18650 Lithium Battery Pack Welding Tool 6000mah Weldable 0.5mm
Aliexpress UK
The two solder pins can't touching, avoid short circuit. The machine power should be plugged into the wall socket. (40A is better) Welding Current Reference: 20A circuit breaker switch can use welding current 20 30A circuit breaker switch can use welding current 30 40A circuit breaker switch can use welding current 40 If you need to use a larger welding current, you can replace the larger circuit breaker switch as needed!
eBay
Awithz Portable Battery Spot Welder DIY Mini Welding Machine 18650 Battery Pack Nickel Strip and Nickel Belt Welding Tools
Aliexpress UK
The spot puller, with a simple operation panel, provides 5/7 modes for your choice. The switch among those modes can be very steady and smooth. Work Stalls: 7 Modes Available. Support 7 Welding Modes.
eBay
Awgem SH1 DIY Portable Handheld Battery Spot Welder for 18650 Lithium Battery, Nickel Strip and Nickel Belt Welding
Aliexpress UK
1x Auto Body Spot Welder;. Stud welding. Triangle piece spot welding and straight pull. Single- sided spot welding. Regular Working Hours: Automatic Mode Program Setting. Single-sided Welding Thickness: 0.02 - 0.05 in / 0.6 - 1.2 mm.
eBay
New Arrivals DIY Portable Handheld Battery Spot Welder for 18650 Lithium Battery Nickel Strip and Nickel Belt Welding
Aliexpress UK
Power：3KW /220V /3500A. The holes on the side can quickly perform heat dissipation without a fan, making the spotter dent puller not so easy to burn, providing high efficiency and ensuring rapid heat dissipation in your work.
eBay
PSW01 Handheld Digital Spot Welder with 11-Level Adjustment & Dual Pulse for 18650 Battery Nickel Strip Welding
Aliexpress UK
Power：3KW /220V /3500A. The holes on the side can quickly perform heat dissipation without a fan, making the spotter dent puller not so easy to burn, providing high efficiency and ensuring rapid heat dissipation in your work.
eBay
811H Battery Spot Welder 42 KW 7000A Capacitor Energy Storage Pulse Welding Machine Iron Lithium Power Battery Large Single A
Aliexpress UK
Heavy Duty Foldable E-Bike Carrier Electric 2 Bike Rack 60KG +E-Mark Taillight. The Spot Welder Dent Puller is specifically engineered forautomotive body dent repair. Spot Welder Dent Puller – Professional Auto Body Dent Repair Tool.
eBay
Awithz Portable Battery Spot Welder DIY Mini Welding Machine 18650 Battery Pack Nickel Strip and Nickel Belt Welding Tool
Aliexpress UK